<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>MyHtml.html</title>
	
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="this is my page">
    <meta http-equiv="content-type" content="text/html; charset=UTF-8">
    
    <!--<link rel="stylesheet" type="text/css" href="./styles.css">-->
	<script type="text/javascript" src="jquery/jquery.js"></script>
	<script type="text/javascript" src="js/kuaipay_util.js"></script>
	
	<script type="text/javascript">
		$(function(){
			var val = "D:\aa\ac.xls"
			alert(val.substring(val.lastIndexOf(".")+1, val.length));
		});
	</script>
  </head>
  
  <body>
  	<form action="servlet/TestServlet" method="post">
  		<input type="text" id="txt" size="30" maxlength="10" />
  	</form>
  </body>
</html>